The phrase "admitted submitting" is correct and usable in written English.
It can be used when acknowledging or confessing to having submitted something, often in a context related to applications, documents, or reports.
Example: "He admitted submitting the report late, which affected the project's timeline."
Alternatives: "acknowledged sending" or "confessed to submitting".
The company admitted submitting false results from emissions tests at its Provo plant, Pacific States Cast Iron Pipe.
He admitted submitting a change of address form so that his former girlfriend's mail, including her unemployment checks, would be delivered to his residence.
The expenses scandal returned to haunt MPs yesterday as a minister admitted submitting a £20,000 bill to the taxpayer for work on the bell tower and roof of his country mansion.
A United States attorney, Catherine Hanaway, said that eight former temporary workers for the Association of Community Organizations for Reform Now admitted submitting cards with false addresses and names and forged signatures.
— The drama of former Senator John Edwards's trial took a few more twists on Thursday as Andrew Young, the eager aide whose fortunes and stature rose and fell with those of Mr. Edwards, admitted submitting misleading financial statements to a wealthy benefactor who thought he was helping the senator hide a mistress.
She has always said she never carried a gun; none of her agents were ever killed; MI5 does not kill people; it does not spy on the prime minister - not even Harold Wilson - or even vet BBC journalists (even though the BBC has admitted submitting names for vetting).
Each admitted to submitting false interest-rate information to the British Bankers Association used to establish Libor, a benchmark for loans and securities issued throughout the world.
The Libor scandal exploded in July 2012, when Barclays admitted to submitting false information used to set the interest rate benchmark and paid about $450 million in fines and civil penalties.
But the inquiries will almost certainly reveal similar behavior at other trading companies, a handful of which have already admitted to submitting false data to publications that produce indexes and to engaging in fake trades designed to inflate trading revenue and volume, lawyers said.
None of the companies admitted having submitted an offer.
In its criminal settlement, which is subject to approval by the courts, HCA will admit to submitting inflated bills and expenses to the government for reimbursement, illegally structuring business deals so that Medicare picked up the cost of corporate expenses, and providing doctors with kickbacks for patient referrals.
